libexec: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

libexec: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Purge more stray embedded $FreeBSD$ strings

These do not use __FBSDID but instead use bare char arrays.

Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D41957

getty: code cleanup, part 2

* Clean up whitespace
* Reindent

Sponsored by: Klara, Inc.

getty: code cleanup, part 1

* Avoid unnecessary use of `unsigned char *`
* Use explicit casts when assigning `unsigned char *` to `char *` or vice versa
* Drop unused global variables (and fix memory leak in `gettable()`)
* Use `snprintf()` instead of `strcpy()` + `strcat()`
* Drop spurious braces in switch

Sponsored by: Klara, Inc.
Obtained from: Apple OSS Distributions (in part)
Differential Revision: https://reviews.freebsd.org/D37263

Revert "getty: push assignment to inner block."

This reverts commit c7b8bc367f18210d233b0e2185b5ce0d55c9ccaa.

Pointed out by: trasz

getty: push assignment to inner block.

No functional change.

MFC after: 2 weeks

Simplify code with strlcpy/strlcat.

MFC after: 2 weeks

Build getty(8) with WARNS=6.

Reviewed by: imp@
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D14197

Sprinkle static; avoid nested externs.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

Add missing initializer.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

Don't cast away the const, it's not been needed since r92925.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Try to fix the old "he capability is stupid" bug in gettytab(5)/getty(8)

There is one capability explicitly documented in gettytab(5) as stupid: he.
And it is indeed. It was meant to facilitate system hostname modification,
but is hardly usable in practice because it allows very limited editing
(e.g., it depends on a particular hostname length, making it non-generic).

Replace it with simple implementation that treats ``he'' as POSIX extended
regular expression which is matched against the hostname. If there are no
parenthesized subexpressions in the pattern, entire matched string is used
as the final hostname. Otherwise, use the first matched subexpression.
If the pattern does not match, the original hostname is not modified.

Using regex(3) gives more freedom, does not complicate the code very much,
and makes a lot more sense, in turn making ``he'' less stupid and actually
useful (e.g., it is now possible to obtain node or domain names from the
original hostname string, without knowing it in advance).

Reviewed by: jilles, manpages (wblock)
Approved by: jilles (implied)
Differential Revision: https://reviews.freebsd.org/D9244

Missing tab.

Pointed out by: bapt

getty(8): Undo incomplete support VEOL2 and VSTATUS.

Forgot to add some definitions for charnames[].

getty(8): Support VEOL2 and VSTATUS

Bring some type cleanups while here.

Obtained from: NetBSD

getty(8): Use poll(2) and nanosleep(2) instead of select(2).

Sort headers while here.

Obtained from: NetBSD (CVS Rev. 1.25 - 1.26)

Remove the #ifdef DEBUG code, which is not compilable on 64bit
architectures. It seems to be an overlooked chunk in the r15645.

PR: 199767
Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Remove the 3rd clause ("advertising clause") of the BSD license as
permitted by the University of Berkeley on July 22, 1999.

Reviewed by: imp
MFC after: 1 week

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Nuke COMPAT_43

o __P removal
o remove register
o use strict prototypes

Replace a strcat() with a strlcat(). Partial sync with OpenBSD; more
work is needed.

Submitted by: "Andrew R. Reiter" <arr@watson.org>
Obtained from: OpenBSD

Changed setflags() to set_flags(). This fixes world breakage due to
recently incremented namespace pollution in <unistd.h>.

$Id$ -> $FreeBSD$

Getty is missing the speed table entry for 230400 baud.
PR: 7280
Reviewed by: phk
Submitted by: Craig Leres <leres@ee.lbl.gov>

Correct incompletes .Xrs. Remove duplicate #includes and unused variables.

Fix botch with escaped characters, go back to using cgetstr().
For escaped characters used in modem strings, use double-backslashes
in gettytab.
PR: 4370

Use cgetustr() since we handled special escapes ourselves.
Fix typo in escape parsing function.
PR: 4370
Submitted by: sumii@is.s.u-tokyo.ac.jp

Import Lite2's src/libexec, except for makekey (which was spammed
by a repository copy from 1.1.5 and patched back to Lite1) and
rbootd/bootdir/SYSHPBSD (which is binary). All changed files have
already left the vendor branch.

Fix memory leak caused by not freeing memory returned by cgetstr()
calls. The cost is a little more up-front memory allocation, but the
effect seems minimal.

Problem noticed-by: bde

Added syslog at LOG_ERR when referencing an unknown gettytab entry
and for other cgetent() failues (circular reference et al).

To be merged into 2.2 after a few days testing.

Revert $FreeBSD$ to $Id$

Added:
ic=expect/send script modem init script
ac=expect/send script modem answer script
ct#val chat script timeout (seconds)
rt#val recycle timeout (seconds) if 'ac' set
dc#val debug bitmask for debugging chat scripts
hw (boolean) enable crtscts handshaking
if=path 'issue' file sent prior login prompt

chat.c is a simplistic expect/send chat module.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Finally commit the changes that make getty(8) no longer depend on the
COMPAT_43 cruft. This is supposedly the last core utility that has
been using it! (So now, one should be able to remove this option from
the config files. Be aware that the last officially released xterm
however still requires it.)

The getty has been running now for several weeks on my modem line, so
i feel safe about it.

Obtained from: mostly from the NetBSD vendor-branch

Import NetBSD's termios'ed getty into a vendor branch.

Obtained from: NetBSD 1.1R

Change hardcoded 15 (which means 38400) to B115200 which is 17

Remove trailing whitespace.

Fix truncating hostname using MAXHOSTNAMELEN
Submitted by: Jan Conard <charly@fachschaften.tu-muenchen.de>

Replace this with the 1.1.5.1 getty. David says that the 4.4 version is too
broken to live.
Submitted by: jkh

BSD 4.4 Lite Libexec Sources